40853707129 has 9 divisors (see below), whose sum is σ = 41260928527. Its totient is φ = 40450471744.

The previous prime is 40853707123. The next prime is 40853707187. The reversal of 40853707129 is 92170735804.

The square root of 40853707129 is 202123.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19677636729 + 21176070400 = 140277^2 + 145520^2 .

It is not a de Polignac number, because 40853707129 - 2²⁵ = 40820152697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40853707123) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21626217 + ... + 21628105.

Almost surely, 2^40853707129 is an apocalyptic number.

40853707129 is the 202123-rd square number.

40853707129 is the 101062-nd centered octagonal number.

It is an amenable number.

40853707129 is a deficient number, since it is larger than the sum of its proper divisors (407221398).

40853707129 is an frugal number, since it uses more digits than its factorization.

40853707129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992 (or 1996 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 40853707129 in words is "forty billion, eight hundred fifty-three million, seven hundred seven thousand, one hundred twenty-nine".